.~ Optical glass (e.g., silent on refractive index and/or Abbe number) {6}
904
.~.~ Infrared transmitting or absorbing
DEFINITION
Classification: 501/904
Infrared transmitting or absorbing:
This subclass takes cross-references of patents which are originals in subclasses enumerated above disclosing an optical glass composition or method of making same disclosed as having the property of or being specifically formulated to enhance the transmission or absorption of radiation in the infrared portion of the electromagnetic spectrum.
(1) Note. The infrared portion of the spectrum is considered to include 14,000 - 15,000 A5 or 10[supscrpt]12[end supscrpt] - 10[supscrpt]14[end supscrpt] HZ.
